Home / 39,895.14-55,052.79-21,989.16

Finding the Fourth Proportional to 39,895.14, 55,052.79 and 21,989.16

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Solution

The fourth proportional to 39,895.14, 55,052.79 and 21,989.16 is: 30,343.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,895.14 : 55,052.79 = 21,989.16 : x
  2. Step 2: Convert to fraction form
    39,895.14/55,052.79 = 21,989.16/x
  3. Step 3: Cross multiply
    39,895.14x = 55,052.79 × 21,989.16
  4. Step 4: Simplify right side
    39,895.14x = 1,210,564,607.76
  5. Step 5: Solve for x
    x = 1,210,564,607.76/39,895.14
  6. Step 6: Final answer
    x = 30,343.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.